You see the silly priced items all the times.. this one is done on purpose, just to show that there is one available for sale I guess...
Others are plain stupid.. asking for 1 loompoint AND 50K for their +1 item... or asking for 1,6 million gold for a +3 item when loompoints sell for below 500K ..
Reminds me of an old Donald Duck cartoon, where the kids have a lemonadestand figuring it is better to try and sell 1 glass of lemonade for $10 000 than 10 000 glasses for $1 .. just takes one lucky customer!